Not able to run in Mac ( v10.9.3 )

[29jitender]

[romannurik]

I'm not sure why Mac OS X shows this error, it's misleading. To fix this, simply go to System Preferences > Security & Privacy and set Allow apps downloaded from to Anywhere.

[romannurik]

Another option is to right click the .app and press Open. This for some reason allows you to skip the security check.

[romannurik]

Yet another option is to remove extended attributes on the .app file:

xattr -rc Android\ Design\ Preview.app

WARNING: Don't do this for untrusted apps.